查女士,25岁,引产一男性胎儿,其身长25cm,有呼吸运动及心跳,应为妊娠多少周
A.16周
B.18周
C.20周
D.24周
E.28周
参考答案:C
--- May I use your new dictionary? I want to look up a word.
--- It’s over there. _______.
A.Feel free
B.Got it
C.It depends
D.It’s my pleasure
带式输送机胶带启动不了或打滑时,可用脚蹬踩、用于推拉或压杠子等办法处理。